Low-Dose Aspirin and Sporadic Anovulation in the EAGeR Randomized Trial
Rose G Radin, Lindsey A Sjaarda, Neil J Perkins, Robert M Silver, Zhen Chen, Laurie L Lesher, Noya Galai, Jean Wactawski-Wende, Sunni L Mumford, Enrique F Schisterman, Rose G Radin, Lindsey A Sjaarda, Neil J Perkins, Robert M Silver, Zhen Chen, Laurie L Lesher, Noya Galai, Jean Wactawski-Wende, Sunni L Mumford, Enrique F Schisterman
Abstract
Context: Among women with a single, recent pregnancy loss, daily preconception low-dose aspirin (LDA) increased the live birth rate with no effect on pregnancy loss. Ovulation is a potential mechanism underlying this effect.
Objective: We estimated the effect of LDA on the per-cycle risk of anovulation among eumenorrheic women.
Design: Multicenter, randomized, double-blind, placebo-controlled trial of daily LDA on reproductive outcomes. Preconception follow-up lasted 1 to 6 menstrual cycles (ClinicalTrials.gov, NCT00467363).
Setting: Four US medical centers during 2007 to 2011.
Patients or other participants: Healthy women (n = 1214), age 18 to 40, were attempting pregnancy, had regular menstrual cycles (21 to 42 days), and had a history of 1 to 2 documented pregnancy losses, ≤2 live births, and no infertility. All participants completed at least 1 menstrual cycle of follow-up; none withdrew due to adverse events.
Intervention: Aspirin (81 mg) daily for 1 to 6 menstrual cycles.
Main outcome measure: Per-cycle risk of anovulation, defined as the absence of both a positive spot-urine pregnancy test and a luteinizing hormone (LH) peak (2.5-fold increase in daily urinary LH). Hypothesis formulation preceded data collection.
Results: Among 4340 cycles, LDA was not associated with anovulation (LDA: 13.4%, placebo: 11.1%; risk ratio = 1.16, 95% confidence interval, 0.88 to 1.52). Results were similar among women with a single, recent loss.
Conclusions: Daily LDA had no effect on anovulation among women with a history of 1 to 2 pregnancy losses. LDA may affect fertility via other pathways, and these warrant further study.
Copyright © 2017 by the Endocrine Society
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Source: PubMed